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1. 发明授权

US08132462B2 Ultrasonographic device 有权
标题翻译：超声波装置
公开(公告)号：US08132462B2
公开(公告)日：2012-03-13
申请号：US11996532
申请日：2006-01-30
申请人： Takashi Azuma , Shinichiro Umemura , Tatsuya Nagata , Hiroshi Fukuda , Shuntaro Machida , Toshiyuki Mine
发明人： Takashi Azuma , Shinichiro Umemura , Tatsuya Nagata , Hiroshi Fukuda , Shuntaro Machida , Toshiyuki Mine
IPC分类号： G01N29/34 , H02N1/08
CPC分类号： A61B8/4483 , A61B8/08 , A61B8/4281 , B06B1/0292 , G01N29/2431 , G01S15/00
摘要： The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103).
摘要翻译：由作为基本单元的隔膜电声换能器（101）构成的超声波阵列换能器的接收灵敏度受到由于泄漏等引起的经过时间的电荷量的变化的影响，导致主光束灵敏度的漂移，由于声学噪声水平的上升引起的声学SN比的降低，以及超声波束的方向性的劣化。为了解决这个问题，提供一种充电控制器（充电监视器211）来控制电声换能器（101）中的电荷。充电监视部（102）监视充电量的变化。当充电量的变化小时，通过例如将接收信号乘以对应于变化量的校准系数，由控制器（104）校准发射灵敏度或接收灵敏度。此外，当电荷量的变化大时，例如，电荷可以从电荷发射体（103）重新发射。

2. 发明申请

US20090301199A1 ULTRASONOGRAPHIC DEVICE 有权
标题翻译：超声波设备
公开(公告)号：US20090301199A1
公开(公告)日：2009-12-10
申请号：US11996532
申请日：2006-01-30
申请人： Takashi Azuma , Shinichiro Umemura , Tatsuya Nagata , Hiroshi Fukuda , Shuntaro Machida , Toshiyuki Mine
发明人： Takashi Azuma , Shinichiro Umemura , Tatsuya Nagata , Hiroshi Fukuda , Shuntaro Machida , Toshiyuki Mine
IPC分类号： G01N29/34 , H02N1/08
CPC分类号： A61B8/4483 , A61B8/08 , A61B8/4281 , B06B1/0292 , G01N29/2431 , G01S15/00
摘要： The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103). The series of operations is controlled by the controller (104), and thus sensitivity variation caused by difference in the changes with elapsed time, particularly between the plural transducers, is calibrated.
摘要翻译：由作为基本单元的隔膜电声换能器（101）构成的超声波阵列换能器的接收灵敏度受到由于泄漏等引起的经过时间的电荷量的变化的影响，导致主光束灵敏度的漂移，由于声学噪声水平的上升引起的声学SN比的降低，以及超声波束的方向性的劣化。为了解决这个问题，提供一种充电控制器（充电监视器211）来控制电声换能器（101）中的电荷。充电监视部（102）监视充电量的变化。当充电量的变化小时，通过例如将接收信号乘以对应于变化量的校准系数，由控制器（104）校准发射灵敏度或接收灵敏度。此外，当电荷量的变化大时，例如，电荷可以从电荷发射体（103）重新发射。一系列操作由控制器（104）控制，因此校正了由于经过时间的变化，特别是多个换能器之间的差异引起的灵敏度变化。

3. 发明授权

US07817811B2 Sound-electricity conversion device, array-type ultrasonic transducer, and ultrasonic diagnostic apparatus 有权
标题翻译：声电转换装置，阵列式超声波换能器和超声波诊断装置
公开(公告)号：US07817811B2
公开(公告)日：2010-10-19
申请号：US11341655
申请日：2006-01-30
申请人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
发明人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
IPC分类号： H04R25/00
CPC分类号： B06B1/0292
摘要： The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon. As a result, the electrode short-circuit prevention film has small electric conductivity, and thus it is made possible to prevent the film from being charged with electric charge and to avoid the drift of the electric charge. Consequently, the sound-electricity conversion characteristics of the sound-electricity conversion device stabilize, and further the sound noise level of the ultrasonic diagnostic apparatus decreases.
摘要翻译：本发明旨在稳定隔膜式声电转换装置的声电转换特性，并且降低使用声电转换装置的超声波诊断装置的噪声水平。声电转换装置由包括形成在硅基板上的下电极和下电极上的上电极的电容器单元构成，下电极和上电极夹着空腔。在空腔侧的上部电极上形成电极短路防止膜。电极短路防止膜由电气时间常数短于1秒且长于10微秒的材料形成，例如含有化学计量过量的硅的氮化硅。结果，电极短路防止膜具有小的导电性，因此可以防止膜被充电并避免电荷的漂移。因此，声电转换装置的声电转换特性稳定，超声波诊断装置的声音噪声水平进一步降低。

4. 发明申请

US20060284519A1 Sound-electricity conversion device, array-type ultrasonic transducer, and ultrasonic diagnostic apparatus 有权
标题翻译：声电转换装置，阵列式超声波换能器和超声波诊断装置
公开(公告)号：US20060284519A1
公开(公告)日：2006-12-21
申请号：US11341655
申请日：2006-01-30
申请人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
发明人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
IPC分类号： H01L41/00
CPC分类号： B06B1/0292
摘要： The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon. As a result, the electrode short-circuit prevention film has small electric conductivity, and thus it is made possible to prevent the film from being charged with electric charge and to avoid the drift of the electric charge. Consequently, the sound-electricity conversion characteristics of the sound-electricity conversion device stabilize, and further the sound noise level of the ultrasonic diagnostic apparatus decreases.
摘要翻译：本发明旨在稳定隔膜式声电转换装置的声电转换特性，并且降低使用声电转换装置的超声波诊断装置的噪声水平。声电转换装置由包括形成在硅基板上的下电极和下电极上的上电极的电容器单元构成，下电极和上电极夹着空腔。在空腔侧的上部电极上形成电极短路防止膜。电极短路防止膜由电气时间常数短于1秒且长于10微秒的材料形成，例如含有化学计量过量的硅的氮化硅。结果，电极短路防止膜具有小的导电性，因此可以防止膜被充电并避免电荷的漂移。因此，声电转换装置的声电转换特性稳定，超声波诊断装置的声音噪声水平进一步降低。

5. 发明授权

US07946992B2 Velocity measuring method and velocity measuring device using the same 失效
标题翻译：速度测量方法和使用其的速度测量装置
公开(公告)号：US07946992B2
公开(公告)日：2011-05-24
申请号：US11915625
申请日：2006-01-06
申请人： Shinichiro Umemura , Takashi Azuma , Tetsuya Hayashi , Naoyuki Murayama
发明人： Shinichiro Umemura , Takashi Azuma , Tetsuya Hayashi , Naoyuki Murayama
IPC分类号： A61B8/00
CPC分类号： G01S15/8981 , A61B8/06 , A61B8/488 , G01S15/8977
摘要： The present invention is to provide a velocity measuring method and a velocity measuring device for carrying out the method. The velocity measuring method includes: a step (S4) for expanding N time series signals by using 0-th to (N−1)-th degree discrete Legendre function as a base; a step (S5) for calculating 2n-th degree complex expansion coefficient by multiplying a linear combination of a (2n−1)-th degree expansion coefficient and a ( 2n+1)-th degree expansion coefficient by an imaginary unit and then linearly combining the result and a 2n-th degree expansion coefficient, and calculating a (2n+1)-th degree complex expansion coefficient by multiplying the (2n+1)-th degree expansion coefficient by an imaginary unit and then linearly combining the result, the 2n-th degree expansion coefficient and a (2n+2)-th degree expansion coefficient; a degree decision step (S4) for determining the degree m of a coefficient having the maximum absolute value among the complex expansion coefficients; and a step (S8) for calculating a signed velocity signal concerning a moving reflection object from a ratio of square sums of the expansion coefficients or complex expansion coefficients corresponding to the degree m.
摘要翻译：本发明提供一种用于实施该方法的速度测量方法和速度测量装置。速度测量方法包括：通过使用第0到第（N-1）度离散勒让德函数作为基础来扩展N个时间序列信号的步骤（S4）通过将第（2n-1）个膨胀系数和第（2n + 1）次膨胀系数的线性组合乘以虚数单位然后线性地计算2n倍复数膨胀系数的步骤（S5）组合结果和2n度膨胀系数，并且通过将第（2n + 1）度膨胀系数乘以虚数单位然后将结果线性组合来计算第（2n + 1）度复数膨胀系数，第2n度膨胀系数和第（2n + 2）膨胀系数; 用于确定复数展开系数中具有最大绝对值的系数的程度m的度决定步骤（S4）以及用于根据与度数m对应的展开系数或复扩展系数的平方和的比率来计算关于移动反射物体的有符号速度信号的步骤（S8）。

6. 发明授权

US08083679B1 Ultrasonic imaging apparatus 失效
标题翻译：超声波成像装置
公开(公告)号：US08083679B1
公开(公告)日：2011-12-27
申请号：US11572322
申请日：2005-07-20
申请人： Takashi Azuma , Shinichiro Umemura , Yo Taniguchi
发明人： Takashi Azuma , Shinichiro Umemura , Yo Taniguchi
IPC分类号： A61B8/14
CPC分类号： A61B8/0883 , A61B8/13 , G01S15/8984
摘要： An ultrasonic image capturing apparatus is disclosed for transmitting ultrasonic pulses from an ultrasonic probe in which elements are arranged two-dimensionally to a subject, receiving the ultrasonic pulses reflected by the subject, and displaying a slice image of the subject. A vector Doppler processor detects motion of the subject along the direction of an aperture of a receiving beam former, and a displacement detector detects motion of a focus region in the subject based on a result of computation of the vector Doppler processor. A scanning plate setting section determines an image capturing region by using ultrasonic waves by the displacement detector.
摘要翻译：公开了一种用于从超声波探头发射超声波脉冲的超声波图像捕获装置，其中元件被二维地布置到被摄体，接收被检体反射的超声波脉冲，并显示被检体的切片图像。矢量多普勒处理器根据接收束形成器的孔径的方向来检测被摄体的运动，位移检测器基于矢量多普勒处理器的计算结果来检测被摄体中的对焦区域的运动。扫描板设置部分通过使用位移检测器的超声波来确定图像捕获区域。

7. 发明申请

US20090048516A1 IMAGE DIAGNOSING DEVICE 有权
标题翻译：图像诊断装置
公开(公告)号：US20090048516A1
公开(公告)日：2009-02-19
申请号：US11914962
申请日：2006-05-18
申请人： Hideki Yoshikawa , Takashi Azuma , Kenichi Kawabata , Kazuaki Sasaki , Shinichiro Umemura
发明人： Hideki Yoshikawa , Takashi Azuma , Kenichi Kawabata , Kazuaki Sasaki , Shinichiro Umemura
IPC分类号： A61B8/00
CPC分类号： A61B8/5207 , A61B5/11 , A61B8/08 , A61B8/461 , A61B8/463 , G06T5/50 , G06T7/223 , G06T2207/10132 , G06T2207/30101
摘要： An diagnostic imaging apparatus for imaging information changing with time and displaying it in real time, composed of an ultrasonic probe (2), having piezoelectric elements arranged in an array form that transmit ultrasonic waves to a target object (1) and acquires a reflection signal from the target object; a body movement measuring unit (12) that constitutes a two-dimensional ultrasonic image using the reflection signal acquired by the ultrasonic probe, sets, in the image plane, a plurality of measuring areas used for measuring the body movement of the target object, and measures the body movement and deformation amounts in the measuring areas; and an image accumulating (subtracting) unit for accumulating or subtracting images using body movement measured by the body movement measurement unit.
摘要翻译：一种诊断成像装置，用于对随时间变化的图像信息随时间变化并实时显示，该超声波探头由超声波探头（2）组成，该超声波探头具有排列成阵列形式的压电元件，以将超声波传送到目标物体（1）并获取反射信号从目标对象; 使用由超声波探头取得的反射信号构成二维超声波图像的身体运动测量单元（12）在图像平面中设置用于测量目标物体的身体运动的多个测量区域，以及测量测量区域的身体运动和变形量; 以及用于通过由身体运动测量单元测量的身体运动来累积或减去图像的图像累积（减去）单元。

8. 发明授权

US08118745B2 Ultrasound imaging apparatus 有权
标题翻译：超声成像装置
公开(公告)号：US08118745B2
公开(公告)日：2012-02-21
申请号：US12039367
申请日：2008-02-28
申请人： Shinichiro Umemura , Takashi Azuma
发明人： Shinichiro Umemura , Takashi Azuma
IPC分类号： A61B8/00
CPC分类号： G01S15/8952 , G01S7/52046
摘要： With a natural number n, an ultrasound pulse having a center frequency of nf0 is transmitted, and an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. Another ultrasound pulse having a center frequency of (n+1)f0 is transmitted, and, similarly, an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. The received echo signal which has a center frequency of nf0 is raised to the power of (n+1) in a self-multiplication unit. Meanwhile, The received echo signal having a center frequency of (n+1)f0 is raised to the power of n in another self-multiplication unit. Each multiplication produces a signal having a center frequency of n(n+1)f0. A signed echo signal is obtained by a phase-sensitive detection between the two obtained signals.
摘要翻译：利用自然数n，发送具有nf0的中心频率的超声波脉冲，并且接收通过被检体内的声阻抗界面的反射而产生的回波。发送具有（n + 1）f0的中心频率的另一个超声波脉冲，同样地，接收由被检查物体内的声阻抗界面的反射产生的回波。接收到的中心频率为nf0的回波信号在自乘单元中提高到（n + 1）的功率。同时，具有中心频率（n + 1）f0的接收回波信号在另一个自乘单元中提高到n的功率。每个乘法产生具有中心频率n（n + 1）f0的信号。通过两个获得的信号之间的相敏检测来获得有符号回波信号。

9. 发明申请

US20090177091A1 VELOCITY MEASURING METHOD AND VELOCITY MEASURING DEVICE USING THE SAME 失效
标题翻译：使用相同的速度测量方法和速度测量装置
公开(公告)号：US20090177091A1
公开(公告)日：2009-07-09
申请号：US11915625
申请日：2006-01-06
申请人： Shinichiro Umemura , Takashi Azuma , Tetsuya Hayashi , Naoyuki Murayama
发明人： Shinichiro Umemura , Takashi Azuma , Tetsuya Hayashi , Naoyuki Murayama
IPC分类号： A61B8/06
CPC分类号： G01S15/8981 , A61B8/06 , A61B8/488 , G01S15/8977
摘要： The present invention is to provide a velocity measuring method and a velocity measuring device for carrying out the method. The velocity measuring method includes: a step (S4) for expanding N time series signals by using 0-th to (N−1)-th degree discrete Legendre function as a base; a step (S5) for calculating 2n-th degree complex expansion coefficient by multiplying a linear combination of a (2n−1)-th degree expansion coefficient and a (2n+1)-th degree expansion coefficient by an imaginary unit and then linearly combining the result and a 2n-th degree expansion coefficient, and calculating a (2n+1)-th degree complex expansion coefficient by multiplying the (2n+1)-th degree expansion coefficient by an imaginary unit and then linearly combining the result, the 2n-th degree expansion coefficient and a (2n+2)-th degree expansion coefficient; a degree decision step (S4) for determining the degree m of a coefficient having the maximum absolute value among the complex expansion coefficients; and a step (S8) for calculating a signed velocity signal concerning a moving reflection object from a ratio of square sums of the expansion coefficients or complex expansion coefficients corresponding to the degree m.
摘要翻译：本发明提供一种用于实施该方法的速度测量方法和速度测量装置。速度测量方法包括：通过使用第0到第（N-1）度离散勒让德函数作为基础来扩展N个时间序列信号的步骤（S4）通过将第（2n-1）个膨胀系数和第（2n + 1）次膨胀系数的线性组合乘以虚数单位然后线性地计算2n倍复数膨胀系数的步骤（S5）组合结果和2n度膨胀系数，并且通过将第（2n + 1）度膨胀系数乘以虚数单位然后将结果线性组合来计算第（2n + 1）度复数膨胀系数，第2n度膨胀系数和第（2n + 2）膨胀系数; 用于确定复数展开系数中具有最大绝对值的系数的程度m的度决定步骤（S4）以及用于根据与度数m对应的展开系数或复扩展系数的平方和的比率来计算关于移动反射物体的有符号速度信号的步骤（S8）。

10. 发明授权

US08460191B2 Ultrasonic medical diagnostic device for imaging changes with time 有权
标题翻译：超声波医疗诊断装置随时间变化
公开(公告)号：US08460191B2
公开(公告)日：2013-06-11
申请号：US11914962
申请日：2006-05-18
申请人： Hideki Yoshikawa , Takashi Azuma , Kenichi Kawabata , Kazuaki Sasaki , Shinichiro Umemura
发明人： Hideki Yoshikawa , Takashi Azuma , Kenichi Kawabata , Kazuaki Sasaki , Shinichiro Umemura
IPC分类号： A61B8/00
CPC分类号： A61B8/5207 , A61B5/11 , A61B8/08 , A61B8/461 , A61B8/463 , G06T5/50 , G06T7/223 , G06T2207/10132 , G06T2207/30101
摘要： An diagnostic imaging apparatus for imaging information changing with time and displaying it in real time, composed of an ultrasonic probe (2), having piezoelectric elements arranged in an array form that transmit ultrasonic waves to a target object (1) and acquires a reflection signal from the target object; a body movement measuring unit (12) that constitutes a two-dimensional ultrasonic image using the reflection signal acquired by the ultrasonic probe, sets, in the image plane, a plurality of measuring areas used for measuring the body movement of the target object, and measures the body movement and deformation amounts in the measuring areas; and an image accumulating (subtracting) unit for accumulating or subtracting images using body movement measured by the body movement measurement unit.
摘要翻译：一种诊断成像装置，用于对随时间变化的图像信息随时间变化并实时显示，该超声波探头由超声波探头（2）组成，该超声波探头具有排列成阵列形式的压电元件，以将超声波传送到目标物体（1）并获取反射信号从目标对象; 使用由超声波探头取得的反射信号构成二维超声波图像的身体运动测量单元（12）在图像平面中设置用于测量目标物体的身体运动的多个测量区域，以及测量测量区域的身体运动和变形量; 以及用于通过由身体运动测量单元测量的身体运动来累积或减去图像的图像累积（减去）单元。

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